Host plant specificity of corticolous lichens in urban and suburban New Amsterdam, Berbice, Guyana

In this study, host plant - lichen specificity was investigated. Data collected from 1000m2 sampling plots at each of four locations with an established 50m x 20m plot site. Forty-one trees across five species were examined using (10cm by 50cm) ladder quadrats on tree trunks (N, S, E, W) 150cm height. A total 14978 individual lichens identified that yielded 10 families, 13 genera and 18 species. Swietenia mahagoni showed the highest average corticolous composition, followed Terminalia catappa Melicoccus bijugales respectively. Cocos nucifera had a higher recorded than Mangifera indica. Crustose most prominent observed (61%) individuals in Graphidaceae Arthoniaceae. Foliose (28%) abundance Parmeliaceae, Caliciaceae Collemataceae. Of taxa recorded, 22.2% restricted to specific trees. C. parasitica, H. laevigata, U. cornuta S. mahagoni. D. applanata nucifera. found all hosts examined. Bacidia laurocerasi, Flavoparmelia caperata, soredians Graphina anguina. hosted 88.9% 7.58. indica lowest 4. The maximum number (10) one